Wedding bells for the stylishly disheveled; Lady Gaga wears a black leotard to mourn McQueen; James Cameron works on Avatar's prequel novel; Prince William sports "suspicious" hair; Gummy Bear gets evicted. Tuesday gossip has two weddings and a funeral.

Two babies later, Nicole Richie and Joel Madden plan to tie the knot. She revealed it on Letterman, while Joel tweeted (then apparently deleted) "Yep. I'm engaged. Very happy." To celebrate the news, here's a photo of vintage Nic and Joel, ribs popping and tattoos blazing. Ah, the good ol' days. How young and unhealthy we were. [People] [ShowBizSpy]

Unhinged by the death of Alexander McQueen, the Sun reports that Lady Gaga refuses to perform with her usual bells and whistles at the Brit Awards, and has been rehearsing "stripped down," acoustic versions of her songs instead. She plans to wear a black leotard of mourning. (Yes, really.) [Sun]

Oh god—Howard Stern is actually campaigning for the American Idol judging job, isn't he? Wife Beth Ostrosky is talking him up, saying Howard "critiques Idol every week at home," and he's such a jackass, Fox should let him project his jackassery into your living room. I try not to think about Howard Stern to much, nor about primetime Fox ratings, but I actually think people would stop watching if Howard Stern were on the show. [P6]

Is this shiny gold band on Bar Rafaeli's ring finger proof of engagement? [fig.1] No, because where is the rock? Outside chance that they're too enlightened for diamonds: Leo is all about ethical consumption, and was in Blood Diamond. In Hollywood, starring in an "issues" movie is like having a PhD in its subject matter. [DailyMail]

The Daily Mail thinks Prince William's "suspicious" dark hair on the cover of Hello! [fig.2] is a ploy to hide his male-pattern baldness, which they depict in all its terror. The slow, inevitable process of balding sounds awful. Like waiting for a terrible secret from your past to catch up with you. [DailyMail]

Avatards rejoice! James Cameron is writing an Avatar prequel novel that producer Jon Landau says should be ready "by the end of the year." [NYDN]

Gummy Bear is ba-a-ack, and it sounds like the oil heir has been cut off. Page Six reports that Jason Davis has been evicted from his $3600/month apartment "for nonpayment of rent." Asked for comment, he reminded "my fans" to watch his upcoming appearance Millionaire Matchmaker. [P6]

Nadya Suleman's date said their Valentine's Day included "lots of octopus." Ewwww. [TMZ]

Former Skid Row leader Sebastian Bach tackled and bounced a man with a switchblade at a Guns 'n' Roses show that was clearly the "real"-est party of Fashion Week. "Nobody is getting anywhere near my man Axl Rose with a knife." [P6]

Justin Timberlake and Jessica Biel are either back together or never broke up, and saw Swan Lake at the New York City Ballet on Valentine's Day. Cute. [P6]

Sofia Vergara went out with a "banking scion," but I can't focus because they accidentally used a picture of Olivia Wilde, who is lovely and all, but it is simply criminal to discuss someone as gorgeous as Sofia Vergara and not include a picture. [figs.3 & 4] Much better. [P6]

Avril Lavigne—fresh from filing for divorce from Sum41's Deryck Whibley—is allegedly dating Brody Jenner. I love it with loathsome people combine forces into a single, easily ignored unit. [ShowBizSpy]